[AK4492]
■ Gain Adjustment Function (PCM Mode, DSD Mode, EXDF Mode)
The AK4492 has the gain adjustment function. The analog output amplitude can be adjusted by GC[2:0]
bits or the GAIN pin.
Table 33. Output Level between Set Values of GC[2:0] bits
AOUTLP/LN/RP/RN Output Level
GC[2]
bit
GC[1]
bit
GC[0]
bit
DSD:
DSD:
Normal Path
PCM
Volume
Bypass
2.5 Vpp
2.5 Vpp
2.5 Vpp
2.5 Vpp
2.5 Vpp
2.5 Vpp
2.5 Vpp
2.5 Vpp
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
2.8 Vpp
2.8 Vpp
2.5 Vpp
2.5 Vpp
3.75 Vpp
3.75 Vpp
2.5 Vpp
2.5 Vpp
2.8 Vpp
2.5 Vpp
2.5 Vpp
2.5 Vpp
3.75 Vpp
2.5 Vpp
2.5 Vpp
2.5 Vpp
(default)
Table 34. Output Level between Set Values of GAIN pin (Valid Only in PCM Mode)
AOUTLP/LN/RP/RN
GAIN pin
Output Level
L
2.8 Vpp
H
3.75 Vpp
Note 52. DSDF bit must be set to “0” if GC[2:0] bits are set to “100” when using DSD Normal Path. Click
noise may occur if DSDF bit is set to “1”.
016011073-E-00
2016/12
- 63 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
